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Hi! I have a string, that follows a predictable format, and I'm looking to replace certain characters in it. Please see below. Any help is appreciated. > have <- "_a _a_1 _a_2 _a_3" > have [1] "_a _a_1 _a_2 _a_3" What I need to do is remove the initial underscore in each space delimited...

Hi all, I'm trying to accomplish a set of tasks that involve set operations/joins. I'm able to solve a bit of this using packages from the Tidyverse. I can't figure out if there's a nicer way to do the last task, please below. The first task is self-explanatory. I have 3 vectors, and I'm...

Hi all, I'm working through a textbook on SP and I'm trying to do some of the exercises. Here's the question followed by my attempt at a solution. For a standard brownian motion started at x=-3, find P(X1 + X2 > -1) Let Y = X1+X2 We want P(Y > -1) Finding the distribution of Y: E(Y) =...

Hi all, I'll attempt to explain what I'm running into though unfortunately I don't have a reproducible example. I'm attempting to load a custom font into R (done) to build a plot using ggplot (done). I'm doing this on Windows 10 if that matters. The font is an emoji-based font...

Hi all, I want to perform a set of data management tasks that involves the following: -Input a data frame with an arbitrary number of columns, and column names, of numeric type. -Check each value (i.e. entry) to see if it meets a condition -If it does, replace the value so as an example: the...

Hi all, I want to get some feedback on the approaches I've considered for an analysis. Here is the setup Unit of analysis: Physician Variables: Physician Specialty, Number of Total Patients they take care of, Number of patients who are diabetic. A typical line of data looks like this...

Hi! I'm attempting to write an R package based on some functions I wrote. I think I have everything down but I've ran into a road block I'm hoping you can help with. I'm using R-Studio, R 3.4.4 and roxygen to do my bidding. I'm trying to run a check (--as-cran) and both of my functions (dsr.R...

Hi! I've been thinking a lot about how video games such as Call of Duty or (any multiplayer game) might determine where to re-spawn you if you are killed in a match. I'm not sure what statistical or machine learning techniques could be applied. This is all very crude, but let me give you a...

Hi all, I had a quick question about functions in R. I'm wondering how to take the value of a parameter and use it inside ggplot AES. Here's a description. I have a simple function that will take an input data set with pairs of x and y variables. The data set might also have multiple by...

Hi all, Happy new years! I'm looking to gather information on etiquette and best practices (hell, even an introduction) on how to use Git hub properly. I recently signed up to post a comment about a bug in an R package and I'm just looking for any tips. Best,

Hi, I've been asked to analyze some data and I wanted to get a second opinion on the way I plan to. I have a sample of 8000 teachers. For each teacher, I have their Teaching Specialty, Total Number of Nights they worked and Total number of day-time days they worked, following working the...

Hi! I'm trying to display some data, let me describe it to you. I have a group of about 5000 teachers. For each teacher, I have the rate of passing students (calculated by the total number of passes / total number trials) over a years period. For each teacher, I have the associated...

Just throwing it out there, what do you guys think about one for talkstats?